reorder value according to most likely cases; reimplemented uniqueness check; reimplemented label and comment to use value
reorder value according to most likely cases; reimplemented uniqueness check; reimplemented label and comment to use value

ssssam/rdflib,yingerj/rdflib,yingerj/rdflib,RDFLib/rdflib,dbs/rdflib,RDFLib/rdflib,armandobs14/rdflib,dbs/rdflib,marma/rdflib,RDFLib/rdflib,dbs/rdflib,avorio/rdflib,ssssam/rdflib,avorio/rdflib,marma/rdflib,armandobs14/rdflib,avorio/rdflib,yingerj/rdflib,marma/rdflib,armandobs14/rdflib,marma/rdflib,RDFLib/rdflib,ssssam/rdflib,yingerj/rdflib,avorio/rdflib,ssssam/rdflib,armandobs14/rdflib,dbs/rdflib